126979011804 has 12 divisors (see below), whose sum is σ = 296284360904. Its totient is φ = 42326337264.

The previous prime is 126979011787. The next prime is 126979011811. The reversal of 126979011804 is 408110979621.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×126979011804² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5290792147 + ... + 5290792170.

Almost surely, 2^126979011804 is an apocalyptic number.

It is an amenable number.

126979011804 is an abundant number, since it is smaller than the sum of its proper divisors (169305349100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126979011804 is a wasteful number, since it uses less digits than its factorization.

126979011804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10581584324 (or 10581584322 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The spelling of 126979011804 in words is "one hundred twenty-six billion, nine hundred seventy-nine million, eleven thousand, eight hundred four".